List of Articles drought stress

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  1 - Efficacy of drought stress on growth stages in advanced durum wheat lines
  Varahram Rashidi
  To study of efficacy of drought stress on the growth stages of durum wheat, a research split plot experiment based on randomized complete design with 3 replications was conducted at Islamic Azad University Tabriz branch, Agriculture Research Station in 2007. Main facto More

  To study of efficacy of drought stress on the growth stages of durum wheat, a research split plot experiment based on randomized complete design with 3 replications was conducted at Islamic Azad University Tabriz branch, Agriculture Research Station in 2007. Main factor was stress in growth stages with 5 levels: a0 (without drought stress), a1 (stress in tillering), a2(stress in steming), a3(stress in flowering), a4 (stress in grain filling period) and minor factors were 8 durum wheat lines. Result of variance analysis showed that drought stress had significant effect on all traits. Also significant interaction of genotypes × stage of drought stress for all traits except biomass showed different behavior of lines for stresses in different growth stages. The drought stress in each growth stage of durum wheat, reduced yield and most effects of them were in tillering and flowering stages. The estimation of correlation between traits showed that there was significant and positive correlation between seed yield with harvest index. In this research, from calculated of resistance indexes, the STI and GMP were determined most suitable indexes, and according to this resistance index, the line of numbers 1 and 2 were of highly yield and most tolerant toward drought stress. Manuscript profile
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  2 - The effect of drought stress on proline accumulation, soluble carbohydrate amounts and ionic sodium and potassium content changes in different white bean (phaseolus vulgaris l.) genotype
  masud zade bageri
  To assess some of the physiological changes, an experiment in the form of split plots and complete randomized blocks was performed in three replications in the research fields of the Islamic Azad university of Shiraz. The firs factor was irrigation level (normal and dro More

  To assess some of the physiological changes, an experiment in the form of split plots and complete randomized blocks was performed in three replications in the research fields of the Islamic Azad university of Shiraz. The firs factor was irrigation level (normal and drought stress) and the second factor included white bean genotypes, (Daneshkadeh shekoofa and G11867), which were categorized as sensitive, semi-tolerant and tolerant dehiscent based on morphological indices. Samples were taken in the 50% flowering stage and the amounts of soluble glucose, proline content, sodium and potassium were measured. The results of the experiment showed that the soluble solution density, proline content and potassium ion increased under stress and the amount of sodium ion decreased. The G11867 dehiscent genotype had the highest amount of soluble glucose and sodium ion. The Daneshkadeh sensitive genotype had the highest amount of potassium ion and proline content. The results indicated that the accumulation of excess potassium and proline content in beans under drought stress can create a kind of adaptation for the plant against drought and help production under these conditions. Manuscript profile
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  3 - Evaluation of Genetic Variation of Bread Wheat Genotypes for Some Morphological and Physiological Characteristics under Drought Stress Condition
  Reza Shahryari
  The present study was conducted in the agricultural research farm of Islamic Azad University, Ardabil Branch, to investigate genetic variation of some bread wheat genotypes for some morpho-physiological traits under separate environmental conditions (drought stress and More

  The present study was conducted in the agricultural research farm of Islamic Azad University, Ardabil Branch, to investigate genetic variation of some bread wheat genotypes for some morpho-physiological traits under separate environmental conditions (drought stress and without drought stress). Results from analysis of variance showed that the interaction of “irrigation levels × genotypes” on traits like plant height, infertile tillers number, spike length, peduncle to plant height ratio, spike number per m2 and grain yield were significant. Genotype No. 35 (4057) produced the highest (6.3 ton/ha) grain yield. Linear multivariable regression revealed that traits such as grain numbers per spike, node number and spike weight accounted for about 58% of overall mean yield among the genotypes under terminal drought stress condition. Node number had the highest direct effect (0.438) on grain yield. The results, also, showed that the direct effect of grain number per spike on yield was positive (0.135) while spike weight on yield was negative (-0.345). Direct effect of node number on yield by spike weight was higher than indirect effect of spike weight by node number. Based on the factor analysis, 75.80% of total variations were explained by 6 factors. The first up to the sixth factors accounted for 21.32, 18.13, 9.72, 9.62, 9.4 and 7.6% of the total variations respectively. Furthermore, cluster analysis, based on Ward method and by using Euclidian squared distance, classified the genotypes into five groups. Results from this study suggest that traits such as grain number per spike, node number and spike weight can be used as a selection criteria in breeding programs for higher grain yield of bread wheat in the regions where plants may be subject to terminal drought stress. Manuscript profile
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  4 - Combining ability and gene action studies for drought tolerance in tomato
  Maryam  Noori Alireza  Motallebi Azar Jaber Panahandeh Mehdi  Saidi Ali Akbar  Asadi Davoud  ZareHaghi Shahnaz Fathi
  Physiological traits of tomato including its resistance to stresses are a main breeding goal in producing new cultivars. This study reports on a combining ability analysis investigating the variance of general and specified combing abilities for some important physiolog More

  Physiological traits of tomato including its resistance to stresses are a main breeding goal in producing new cultivars. This study reports on a combining ability analysis investigating the variance of general and specified combing abilities for some important physiological characteristics as a whole as well as their effects for individual parents and hybrids of 19 tomato genotypes of tomato under drought stress. Three commercial innate lines and four analyzers were used in a line-to-tester crossing plan at Ilam University, Iran. There was a significant difference between genotypes (parents and crosses) in all characteristics at three levels of stress. Evaluating the impacts of common combining capacity analyzers and lines showed that neither a single line nor an analyzer was a commendable common combiner for all of the characteristics examined at all three push levels. Estimation of the effects of specific combining ability indicated that for each specific physiological trait, a specific hybrid showed the highest effect at all three stress levels. In all of the traits under study, specific combining ability variance had a higher estimation than general combining ability variance, and the genetic variance ratio of additive variance to non-additive variance was smaller than one, indicating that non-additive gene action predominated in the inheritance of all of the characteristics in the three levels of stress. The degree of dominance under three levels of stress was higher than one for all attributes except total soluble solids, and it seems that dominance in the genetic locations controlling these traits is superseded. Manuscript profile
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  5 - Fatty Acid Composition of Canola Cultivars Affected by Different Sowing Dates
  Taraneh Samarzadeh Vazhdehfar Farzad Paknejad Amir Hossein Shirani Rad Saeed Vazan ‎Mostafa‎ Oveisi‎
  10.30495/ijpp.2021.1884670.1182
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  6 - Effects of Salinity and Drought Stresses on Seed Germination and Seedling Growth of Desert Wheatgrass Agropyron desertorum
  Hamid Reza Saeedi Goraghani Ghodrat Alah Heidary Mojtaba Solaimani Sardo
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  7 - Effect of irrigation regimes on some quantity and quality traits of three bread wheat cultivars in Isfahan province
  H. Dehghanzadeh
  To determine the effect of irrigation regimes on some quantity and quality traits of three bread wheat cultivars in Isfahan, two one-year field experiments were carried out in a split plot layout arranged as randomized complete blocks design with four replicates in two More

  To determine the effect of irrigation regimes on some quantity and quality traits of three bread wheat cultivars in Isfahan, two one-year field experiments were carried out in a split plot layout arranged as randomized complete blocks design with four replicates in two consecutive growing seasons; 2012 - 2013 and 2013 - 2014. The main plots considered irrigation regimes (irrigation after 75, 95 and 115 mm cumulative evaporation from class A evaporation pan), and sub-plots considered three wheat cultivars (Sepahan, Ghods and Pishtazs).Results showed that irrigation after 75 and 95 mm cumulative evaporation did not differ significantly for morphological traits, yield and yield components. Delay in irrigation from 95 to 115 mm cumulative pan evaporation significantly reduced grain yield and its components and increased protein percent. Ghods and Pishtaz cultivars had the highest and the lowest number of grain per spike and the lowest and the highest thousand kernel weight and the lowest and the highest grain yield, respectively. It was concluded that by irrigation wheat after 95 mm cumulative pan evaporation, water could be saved by 22% with no significant loss in yield, while grain protein increased by 1.77 percent. Manuscript profile
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  8 - Effect of Drought and Heat Stress on Growth and Yield and Quality of Wheat (Triticum aestivum L.)
  IMAD ALWAN KATTAN MOHAMMAD MIRZAEI HEYDARI
  10.30486/roce.2022.701269
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  9 - Effect of micronutrient elements on germination and seedling characteristics in sugar beet under drought stress conditions
  masomeh nasiri raouf ssharifi
  Seeds that grow in root and stem conditions under drought conditions can be found more quickly and quickly, and in poor environmental conditions, they guarantee higher yields. The experiment was a factorial experiment with completely randomized design with three replica More

  Seeds that grow in root and stem conditions under drought conditions can be found more quickly and quickly, and in poor environmental conditions, they guarantee higher yields. The experiment was a factorial experiment with completely randomized design with three replications. The investigated factors were 8 levels of fertilizer treatment 1. Control (no spraying) 2. Pure iron (2 per thousand) 3. Pure manganese (2 per thousand) 4. Pure boron (2 per thousand) 5. Boron and manganese (4 In thousand) 6. Iron and boron (4 per thousand) 7. Iron and manganese (4 per thousand) 8. Manganese and boron (6,000) and five osmotic potential levels (0, 2-, 4-, 6-, 8-). Polyethylene glycol 6000 was used to create various osmotic potentials. With the occurrence of osmotic stress, germination speed, germination uniformity, germination percentage and traits related to root and shoot dry weight, root length and shoot length decreased significantly. Germination percentage is related to root length. The roots become green before other plant organs come out of the seed. Consequently, they are subjected to environmental stress before other organs. Therefore, root length trait is a suitable criterion for choosing drought tolerance. The highest root length was obtained in manganese and the least in iron treatment with manganese. Figures with more germination percentage, seedlings longer and more dry matter. Manuscript profile
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  10 - Response of some new irrigated wheat line and cultivars to cut of terminal irrigation
  Behrooz Ekhtiary Esmaeil Nabizadeh
  Access to water is limited in many parts of the world and the drought process is more than any other environmental factor is limiting plant’s growth and crop production. In this study, quantitative and qualitative traits of Triticum aestivum (Triticum aestivum) un More

  Access to water is limited in many parts of the world and the drought process is more than any other environmental factor is limiting plant’s growth and crop production. In this study, quantitative and qualitative traits of Triticum aestivum (Triticum aestivum) under irrigation at the end of the growing season, as a randomized complete block design with three replications, were conducted at a Research Field in Bukan County was studied. The main factor of moisture restriction (S) was two levels of S1: optimal moisture conditions and S2: Moisture constraint with irrigation cut off at the seed filling stage and in the event of rainfall, preventing precipitation by drainage during the filling stage. The second factor (C) is five types of wheat, including cultivars C92-5 and C91-4, Mihan, Heidari and pishgam. Tension treatments at the block and wheat cultivars in the block were placed. Drought stress reduced the traits (plant height, internode length, panicle length, number of seeds per spike, grain yield and biology, 1000 grain weight and harvest index). Among the cultivars used in this experiment, Heidari variety was superior to other cultivars in terms of traits, and in some cases, it had a significant superiority. For example, in the weight of a thousand seeds and number of seeds per spike, the cultivar Mihan and the number of spikes per square meter, the pioneer was superior to the rest of the cultivars. In conditions of drought stress, heydari, Mihan and pishgam cultivars were superior to the other two cultivars. Manuscript profile
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  11 - The effect of mycorrhizal fungi, water stress and year on flower yield and some characteristics of medicinal plant of Borage (Borago officinalis L.) in Yasouj region
  Ali Rahimi
  Identifying the critical time and timing of plant irrigation based on a precise and basic plan is the key to water conservation, improvement of irrigation operations and plant tolerance to water shortage in agriculture. In recent years, vesicular arbuscular mycorrhizal More

  Identifying the critical time and timing of plant irrigation based on a precise and basic plan is the key to water conservation, improvement of irrigation operations and plant tolerance to water shortage in agriculture. In recent years, vesicular arbuscular mycorrhizal fungi have been used in many plants to deal with dehydration and drought stress. In this regard, an experiment was conducted as split-plot in the form of randomized complete block design with 3 replications in the Yasuj region at years 2015 and 2016. Water stress was considered as the main factor in the form of irrigation after 30, 60, 90, 120 and 150 mm of evaporation from the evaporation pan class A and mycorrhizal fungus was considered as a secondary factor in the form of no application, application of Glomus mosseae and application of Glomus intraradices. The results showed that the interaction of irrigation and mycorrhizal fungi on flower phosphorus, flower yield, biological yield and water use efficiency of Borage was significant. In irrigation levels after 60, 90, 120 and 150 mm of water evaporation from the evaporation pan, the use of mycorrhizal fungi Glomus mosseae and Glomus intraradices compared to the absence of fungi respectively increased the yield of plant flowers (30.04% and 27.35 %), (90.2% and 90.98%), (93.21% and 94.1%) and (81.73% and 78.86%), also, at these levels of irrigation, biological yield and water use efficiency of Borage flower achieved a significant increase in the presence of mycorrhizal fungus, compared to the absence of mycorrhizal fungus application. Application of both strains of mycorrhizal fungus Glomus mosseae and Glomus intraradices in irrigation levels after 90, 120 and 150 mm of water evaporation from the evaporation pan compared to no application of mycorrhizal fungus, respectively, resulted in a significant increase in the harvest index of Borage flower (44.55% and 43.36%), (13.21% and 15.96%) and (5.6% and 5.41%) and flower phosphorus (44.69% and 20.45%), (150% and 125%) and ( 267.74% and 235.48%). Mycorrhizal fungus was able to moderate the negative effects of drought stress and increase the above-mentioned traits in those irrigation levels, and based on the results of this study, irrigation treatment after 90 mm of water evaporation from the evaporation pan + the use of Glomus mosseae mycorrhizal fungi is recommended. Manuscript profile
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  12 - The effect of drought stress on the efficiency of rhizobial bacteria (Rhizobium leguminosarum) symbiotic with faba bean (Phaseoulus vulgaris) Barkat variety
  Mohammad hossein Arzanesh
  In order to investigate the effect of drought stress on some growth parameters and nodulation index, the symbiotic efficiency of rhizobial isolates an experiment in controlled greenhouse conditions in the form of a completely randomized design with 21 rhizobial isolates More

  In order to investigate the effect of drought stress on some growth parameters and nodulation index, the symbiotic efficiency of rhizobial isolates an experiment in controlled greenhouse conditions in the form of a completely randomized design with 21 rhizobial isolates, a negative control treatment (without rhizobial bacteria) and a control treatment Positive (no bacteria with nitrogen fertilizer at the rate of 70 mg/kg from urea source) and 3 repetitions were done in 2013. Different levels of drought stress including drought in two levels S0 (100% of field capacity (control or no drought stress)), S3 (55% of field capacity (severe stress)), which by adding different concentrations of zero and 310 grams per liter of polyethylene glycol 6000 (PEG) was applied to the nutrient solution after one week of seedling germination. The results of statistical analyzes showed that drought stress had a significant reduction effect on shoot dry weight, shoot water content, nitrogen content, symbiotic efficiency of rhizobial isolates and nodulation index. Manuscript profile
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  13 - Effect of terminal drought stress on agronomic traits of irrigated barley lines and cultivars
  Alishir Niazifard
  10.22034/aej.2017.531389
  To evaluate the effect of terminal drought stress on yield an yield components of seven advanced barley lines along with cultivars of Nosrat and Yosef as checks, an experiment was carried out in split plot based on randomized complete block design with three replication More

  To evaluate the effect of terminal drought stress on yield an yield components of seven advanced barley lines along with cultivars of Nosrat and Yosef as checks, an experiment was carried out in split plot based on randomized complete block design with three replications in Islam Abad-e Gharb Research Station during 2011-2012. Terminal drought stress and non-stress treatments were assigned in main plots and genotypes were allocated in sub-plots. Traits such as grain yield, kernel thousand weight, plant height, biomass, spike per area, seed per spike and harvest index were measured. Drought stress and genotypes interaction was significant in grain yield, kernel thousand weight, plant height, biomass, spike per area, seeds per spike and harvest index. Genotypes were different statistically in all recorded traits. On the whole, in both drough stress and normal conditions, Nosrat and MBD-85-8 had the highest grain yield with 6480 and 6330 kg/ha, respectively. Meanwhile MBD-85-14 had the lowest grain yield with 4180 kg/ha. Therefore, Nosrat and MB-85-8 are recommendable to barley-growers encountering with terminal drought stress condition. Manuscript profile
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  14 - Study of genetic diversity of bread wheat genotypes in view point of remotion of assimilates to seed in two normal and drought stress conditions
  Majid Tousi Mojarrad Mohammad Reza Ghannadha Mohammad Salehi
  Genetice diversity of bread wheat genotypes in view point of assimilate remotion  potential to seed in two normal and drought stress conditions, was evaluated in 2003. two experiment were conducted as RCBD design with four replications and eight genotypes. In one e More

  Genetice diversity of bread wheat genotypes in view point of assimilate remotion  potential to seed in two normal and drought stress conditions, was evaluated in 2003. two experiment were conducted as RCBD design with four replications and eight genotypes. In one experiment, irrigation was done all growing season based on climate condition and plant need of plant. While, in other experiment irrigation was don only in spiklet stage and filling seed stage suffered drought stree condition. Result showed that there were no significant difference in dry matter transmission from peduncle and second medeian node in all genotypes in two normal and stress conditions. While all genotypes showed significant difference in dry matter transmission from other parts of plant. In normal condition, there was no significant difference in remotion of dry matter from peduncle and second medeian node, but in other parts of plant there was significant difference at 5% confidence level. otherwise in drought stree condition, there was significant difference in remotion of dry matter from peduncle and second medeian node in 5% confidence level. And in other parts of plant, there was no significant difference. Remotion dependent characteristics did not correlate with seed yield. Thus, though this process act as a support source of seed weight, due to their low  contribution to seed weight, it dose not seem that Nariety selection based on mentioned characteristics result in high yield genotypes in semidwarf wheat genotypes Manuscript profile
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  15 - Effects of PGPR application methods on biological yield and Chl a+b content of Yarrow (Achilea millefolium L.) under drought stress conditions
  ahmad mirjalili
  In order to study the effects of PGPR application methods on biological yield and Chl a+b content of Yarrow (Achilea millefolium L.) under drought stress conditions an experiment was performed at Islamic Azad University, Yadegar-e-Imam Khomeini (RAH) Shahre-Rey Branch. More

  In order to study the effects of PGPR application methods on biological yield and Chl a+b content of Yarrow (Achilea millefolium L.) under drought stress conditions an experiment was performed at Islamic Azad University, Yadegar-e-Imam Khomeini (RAH) Shahre-Rey Branch. This experiment was carried out as a split plot based on randomized completely randomized block design with three replications. Experimental factors were included irrigation regimes as the main plot in three levels (50, 90 and 130 mm evaporation from a class pan) and PGPR application methods in four levels (Non application, root inoculation, application in irrigation water, and root inoculation+ application in irrigation) as the subplot. The results indicated that, simple effect of irrigation and PGPRS were significant on experimented traits but the interaction effects were meaningful only on biological yield content at 5% level of Probability. In this case, drought stress decrease both biological yield and Chl a+b content of yarrow. The treated plants with PGPRS had more evaluated traits compare to control. The results revealed that root inoculation + PGPR application in irrigation were more effective than the other application methods for decreasing harmless effects of drought. So the highest biological yield content (7142 kg/hec) belonged to the normal irrigation condition (50 mm irrigation regime) and 4th level of PGPR application method (root inoculation+ application in irrigation). and the highest Chl a+b content (3.7767 Mg per gram of fresh weight) belonged to the normal irrigation condition (50 mm irrigation regime) and 4th level of PGPR application method (root inoculation+ application in irrigation). Manuscript profile
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  16 - Tolerant to drought stress of advance barley genotypes
  behrouz vaezi nages ramanimoghadam
  Present study was consisted on 18 advance barley genotypes which was investigated at Gachsaran Agricultural Research Station for two years with RCBD design with 4 replications. During growing year recording data form agronomic important characters. For statistical analy More

  Present study was consisted on 18 advance barley genotypes which was investigated at Gachsaran Agricultural Research Station for two years with RCBD design with 4 replications. During growing year recording data form agronomic important characters. For statistical analysis was performed by software's such as SAS 9.4, Genstat and GGbiplot. Combine analysis of variance was done for grain yield and some agronomic characters at stress and non stress condition and grain yield mean comparisons was accomplished via Duncan at 1% probability level. Grain yield Combine analysis of variance at stress condition showed that year effect and year× variety interaction effect were significant at 1% probability level and variety effect not significant. But at non stress condition just year effect was significant and other effects not significant. Grain yield mean comparisons at 1% probability level indicated that L13 with 4.483 t/ha and 5.814 t/ha at stress and non stress condition was placed at the first class. Considering drought stress tolerant indices showed that L13 detected as the best tolerant genotype to stress condition. Principle components analysis results showed that just 2 components explained 98.2% of total diversity among data. The first components having high and positive correlation with grain yield at stress condition and stress indices such as mean productivity, harmonic mean, geometrical mean productivity, yield index, yield stability index, stress tolerance index, modified stress tolerance index in stress and non stress condition and finally drought index. For this reason the first component identified as the stress tolerant component. But the 2nd component just with justifying 1.8% of total variation having correlation with TOL index and stress susceptibility index identified as the sensitive component. Manuscript profile